ICON K65904R 4.5" Lift Stage 5 Suspension System Kit w/ Radius Arms | 2023-2025 Ford F250/F350 Super Duty DIESEL

Features:

• 4.5" front lift for diesel 4WD Super Duty
• Dual-rate coil springs improve comfort and control
• Radius arms increase strength and caster adjustability
• No drop brackets needed, improves ground clearance
• CDCV shocks with 10 compression adjustment settings
• 2.5" remote reservoir shocks reduce fade under load
• Up to 50% more front wheel travel than stock
• Centerline stabilizer with piggyback reservoir included
• Adjustable track bar centers axle and improves handling
• Rear lift with 5" heavy-duty fabricated blocks
• Stainless steel braided front brake lines included
• Shocks are fully rebuildable and tunable

Make Your Super Duty Ride Like It Should

If you're tired of your Super Duty feeling limited by stock suspension, the ICON K65904R Stage 5 System with Radius Arms is the upgrade that changes everything. This system delivers 4.5 inches of front lift and gives you the clearance to fit larger tires without losing ride quality. Whether you're hauling heavy loads, navigating gravel backroads, or just looking for more comfort on your daily commute, this setup delivers a noticeable improvement in control and feel. The real standout is the CDCV-equipped shocks, giving you 10 levels of compression adjustability so you can fine-tune your ride for any situation, on the job, on the trail, or on the highway. Steering feedback is tighter and more responsive thanks to the 2.5 Centerline stabilizer with piggyback reservoir, which helps tame the impact of big tires and rough terrain. The upgraded radius arms don’t just look beefy, they provide more tire clearance at full lock and maintain correct alignment without needing drop brackets. It’s a high-performance lift built for trucks that don’t sit still for long.

Full System Suspension Control With Tuned Damping Built In

The Stage 5 Suspension System with radius arms is engineered for diesel-powered 2023-2025 F-250 and F-350 owners who demand control, adjustability, and durability across all types of use. Dual-rate front coil springs provide a softer ride over small bumps, then stiffen as they compress to prevent bottoming out under heavy loads or off-road pressure. Front and rear 2.5 Aluminum Series shocks come equipped with ICON’s CDC Valves, offering 10 external compression settings to customize damping for towing, trail riding, or highway cruising. Remote reservoirs increase oil capacity and cooling surface area, improving shock longevity and consistency under extended use. The fabricated radius arms include built-in caster cams for alignment correction, along with increased ground clearance and more space at full steering lock. A track bar drop bracket and adjustable track bar work together to reduce bump steer and keep the axle centered. Out back, 5-inch fabricated lift blocks and extended U-bolts support hauling duties without sacrificing suspension performance. Stainless braided brake lines, sway bar brackets, and bump stop spacers round out a system built as a complete suspension solution, not just a lift.

Fits: 2023, 2024, 2025 Ford F250/F350 Super Duty DIESEL

Notes:

• Fits only 4WD diesel F‑250 and F‑350 models
• Not compatible with gas variants or Cab & Chassis
• Radius arms include caster adjustment cams
• No front drop brackets needed for geometry
• Rear lift handled with expansion packs (not blocks)
• CDCV shocks provide 10 external compression settings
• Remote reservoirs help prevent shock fade under load
• System boosts front wheel travel ~50% over stock
• Track bar drop bracket corrects bump steer geometry
• Shocks and stabilizers are fully rebuildable/tunable
• Includes stainless braided brake lines
• Lifetime warranty on springs and fabricated parts